19728741

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{307}}^1\times {\mathrm{691}}^1$

素因数の和:1032

約数の個数: 16

約数和(自身を含む): 27281408

約数和(自身を除く): 7552667

約数列:

[1, 3, 31, 93, 307, 691, 921, 2073, 9517, 21421, 28551, 64263, 212137, 636411, 6576247, 19728741]

約数ペア:

[(1, 19728741), (3, 6576247), (31, 636411), (93, 212137), (307, 64263), (691, 28551), (921, 21421), (2073, 9517)]